gcc/testsuite/g++.old-deja/g++.other/volatile1.C

// { dg-do assemble  }
// Test that failed lvalue-to-rvalue conversion of vf doesn't crash the
// compiler.

class f_class		       // { dg-message "note" "candidates" }
{ };

volatile f_class	      // { dg-warning "deprecated" "" { target c++2a } }
ret_v_f_class()
{
  f_class t;
  return t;
}

int main(void)
{
  volatile f_class vf;
  0 ? ret_v_f_class() : vf;	// { dg-error "volatile" } can't copy volatile lvalue
  return 0;
}